Using empirical rule,
Upper range of 68%=15+5=20
Lower range =10
Range=10
4b+6=5 —— that’s correct because it’s asking for the sum of 4 times and number and 6=5 and sum is addition
4-2 is 2
and 5-3 is 2
when you add or subtract fractions, you don't change the denominator (bottom number in fraction)
so the answer is 2 2/8
The total number of elements is 2+2=4. Since we have 2 silver earrings, we get

the, the probability to get two silver earrings is 1/2, which is equivalent to 0.5.